Re: Extracting green channel from FITS

Posted by karenacollins on Mar 07, 2022; 9:25am
URL: http://astroimagej.170.s1.nabble.com/Extracting-green-channel-from-FITS-tp1750p1853.html

Hi Bill,

Many thanks for the Canon EOS 700D image of Han's R G B test pattern on your computer screen. It is the true test of ensuring the colors are being extracted correctly.

Kevin fixed a problem in the AIJ extraction this morning, and I have uploaded the fix to the latest daily build (v5.0.3.02 or later, after update). The results should now be correct, and I believe match the ASTAP results.

Your image shows the red, green, and blue areas as the brightest areas in the AIJ extracted 1/4 size red, green, and blue images, respectively.

Also, I believe that all 9 of Han's v6 test images are now interpreted correctly too, as well as a separate one that I created.

We'll push this latest version to a numbered build soon, but use the daily build for now for correct extractions.

Thank you for highlighting this deficiency in AIJ, and thanks to Han for helping us get the ASTAP and AIJ results to be consistent.

Do let us know if you notice other possible problems.

Karen